/*
 * Copyright 2015 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package io.netty.handler.codec.http.cookie;

import static io.netty.handler.codec.http.cookie.CookieUtil.*;
import static io.netty.util.internal.ObjectUtil.checkNotNull;

/**
 * The default {@link Cookie} implementation.
 */
public class DefaultCookie implements Cookie
{

    private final String name;

    private String value;

    private boolean wrap;

    private String domain;

    private String path;

    private long maxAge = UNDEFINED_MAX_AGE;

    private boolean secure;

    private boolean httpOnly;

    /**
     * Creates a new cookie with the specified name and value.
     */
    public DefaultCookie(String name, String value)
    {
        name = checkNotNull(name, "name").trim();
        if (name.isEmpty())
        {
            throw new IllegalArgumentException("empty name");
        }
        this.name = name;
        setValue(value);
    }

    @Override
    public String name()
    {
        return name;
    }

    @Override
    public String value()
    {
        return value;
    }

    @Override
    public void setValue(String value)
    {
        this.value = checkNotNull(value, "value");
    }

    @Override
    public boolean wrap()
    {
        return wrap;
    }

    @Override
    public void setWrap(boolean wrap)
    {
        this.wrap = wrap;
    }

    @Override
    public String domain()
    {
        return domain;
    }

    @Override
    public void setDomain(String domain)
    {
        this.domain = validateAttributeValue("domain", domain);
    }

    @Override
    public String path()
    {
        return path;
    }

    @Override
    public void setPath(String path)
    {
        this.path = validateAttributeValue("path", path);
    }

    @Override
    public long maxAge()
    {
        return maxAge;
    }

    @Override
    public void setMaxAge(long maxAge)
    {
        this.maxAge = maxAge;
    }

    @Override
    public boolean isSecure()
    {
        return secure;
    }

    @Override
    public void setSecure(boolean secure)
    {
        this.secure = secure;
    }

    @Override
    public boolean isHttpOnly()
    {
        return httpOnly;
    }

    @Override
    public void setHttpOnly(boolean httpOnly)
    {
        this.httpOnly = httpOnly;
    }

    @Override
    public int hashCode()
    {
        return name().hashCode();
    }

    @Override
    public boolean equals(Object o)
    {
        if (this == o)
        {
            return true;
        }

        if (!(o instanceof Cookie))
        {
            return false;
        }

        Cookie that = (Cookie) o;
        if (!name().equals(that.name()))
        {
            return false;
        }

        if (path() == null)
        {
            if (that.path() != null)
            {
                return false;
            }
        }
        else if (that.path() == null)
        {
            return false;
        }
        else if (!path().equals(that.path()))
        {
            return false;
        }

        if (domain() == null)
        {
            if (that.domain() != null)
            {
                return false;
            }
        }
        else
        {
            return domain().equalsIgnoreCase(that.domain());
        }

        return true;
    }

    @Override
    public int compareTo(Cookie c)
    {
        int v = name().compareTo(c.name());
        if (v != 0)
        {
            return v;
        }

        if (path() == null)
        {
            if (c.path() != null)
            {
                return -1;
            }
        }
        else if (c.path() == null)
        {
            return 1;
        }
        else
        {
            v = path().compareTo(c.path());
            if (v != 0)
            {
                return v;
            }
        }

        if (domain() == null)
        {
            if (c.domain() != null)
            {
                return -1;
            }
        }
        else if (c.domain() == null)
        {
            return 1;
        }
        else
        {
            v = domain().compareToIgnoreCase(c.domain());
            return v;
        }

        return 0;
    }

    /**
     * Validate a cookie attribute value, throws a
     * {@link IllegalArgumentException} otherwise. Only intended to be used by
     * {@link io.netty.handler.codec.http.DefaultCookie}.
     * @param name attribute name
     * @param value attribute value
     * @return the trimmed, validated attribute value
     * @deprecated CookieUtil is package private, will be removed once old
     *             Cookie API is dropped
     */
    @Deprecated
    protected String validateValue(String name, String value)
    {
        return validateAttributeValue(name, value);
    }

    @Override
    public String toString()
    {
        StringBuilder buf = stringBuilder().append(name()).append('=')
                .append(value());
        if (domain() != null)
        {
            buf.append(", domain=").append(domain());
        }
        if (path() != null)
        {
            buf.append(", path=").append(path());
        }
        if (maxAge() >= 0)
        {
            buf.append(", maxAge=").append(maxAge()).append('s');
        }
        if (isSecure())
        {
            buf.append(", secure");
        }
        if (isHttpOnly())
        {
            buf.append(", HTTPOnly");
        }
        return buf.toString();
    }
}
